| /* Assembly outputs of |
| |
| extern void bar(); |
| |
| void foo(int p) { |
| int local = p; |
| bar(); |
| local = 123; |
| bar(); |
| local = 456; |
| } |
| |
| compiled by GCC 14.2.1 with -O2 -g -dA -gdwarf-4. */ |
| |
| .file "dwarf4.c" |
| .text |
| .Ltext0: |
| .file 1 "dwarf4.c" |
| .p2align 4 |
| .globl foo |
| .type foo, @function |
| foo: |
| .LVL0: |
| # DEBUG p => di |
| .LFB0: |
| # dwarf4.c:3:17 |
| .loc 1 3 17 view -0 |
| .cfi_startproc |
| # BLOCK 2, count:1073741824 (estimated locally) seq:0 |
| # PRED: ENTRY [always] count:1073741824 (estimated locally, freq 1.0000) (FALLTHRU) |
| # dwarf4.c:4:3 |
| .loc 1 4 3 view .LVU1 |
| # DEBUG local => di |
| # dwarf4.c:5:3 |
| .loc 1 5 3 view .LVU2 |
| # dwarf4.c:3:17 |
| .loc 1 3 17 is_stmt 0 view .LVU3 |
| subq $8, %rsp |
| .cfi_def_cfa_offset 16 |
| # dwarf4.c:5:3 |
| .loc 1 5 3 view .LVU4 |
| xorl %eax, %eax |
| call bar |
| .LVL1: |
| # DEBUG local => entry_value#0 |
| # DEBUG p => entry_value#0 |
| # dwarf4.c:6:3 |
| .loc 1 6 3 is_stmt 1 view .LVU5 |
| # DEBUG local => 0x7b |
| # dwarf4.c:7:3 |
| .loc 1 7 3 view .LVU6 |
| xorl %eax, %eax |
| # dwarf4.c:9:1 |
| .loc 1 9 1 is_stmt 0 view .LVU7 |
| addq $8, %rsp |
| .cfi_def_cfa_offset 8 |
| # SUCC: EXIT [always] count:1073741824 (estimated locally, freq 1.0000) (ABNORMAL,SIBCALL) |
| # dwarf4.c:7:3 |
| .loc 1 7 3 view .LVU8 |
| jmp bar |
| .LVL2: |
| .cfi_endproc |
| .LFE0: |
| .size foo, .-foo |
| .Letext0: |
| .section .debug_info,"",@progbits |
| .Ldebug_info0: |
| .long 0x9e # Length of Compilation Unit Info |
| .value 0x4 # DWARF version number |
| .long .Ldebug_abbrev0 # Offset Into Abbrev. Section |
| .byte 0x8 # Pointer Size (in bytes) |
| .uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit) |
| .long .LASF0 # DW_AT_producer: "GNU C17 14.2.1 20240906 [releases/gcc-14 r14-10649-gaedf6f810ee] -mtune=generic -march=x86-64 -g -gdwarf-4 -O2" |
| .byte 0xc # DW_AT_language |
| .long .LASF1 # DW_AT_name: "dwarf4.c" |
| .long .LASF2 # DW_AT_comp_dir: "." |
| .quad .Ltext0 # DW_AT_low_pc |
| .quad .Letext0-.Ltext0 # DW_AT_high_pc |
| .long .Ldebug_line0 # DW_AT_stmt_list |
| .uleb128 0x2 # (DIE (0x2d) DW_TAG_subprogram) |
| # DW_AT_external |
| .ascii "bar\0" # DW_AT_name |
| .byte 0x1 # DW_AT_decl_file (dwarf4.c) |
| .byte 0x1 # DW_AT_decl_line |
| .byte 0xd # DW_AT_decl_column |
| # DW_AT_declaration |
| .long 0x3b # DW_AT_sibling |
| .uleb128 0x3 # (DIE (0x39) DW_TAG_unspecified_parameters) |
| .byte 0 # end of children of DIE 0x2d |
| .uleb128 0x4 # (DIE (0x3b) DW_TAG_subprogram) |
| # DW_AT_external |
| .ascii "foo\0" # DW_AT_name |
| .byte 0x1 # DW_AT_decl_file (dwarf4.c) |
| .byte 0x3 # DW_AT_decl_line |
| .byte 0x6 # DW_AT_decl_column |
| # DW_AT_prototyped |
| .quad .LFB0 # DW_AT_low_pc |
| .quad .LFE0-.LFB0 # DW_AT_high_pc |
| .uleb128 0x1 # DW_AT_frame_base |
| .byte 0x9c # DW_OP_call_frame_cfa |
| # DW_AT_GNU_all_call_sites |
| .long 0x9a # DW_AT_sibling |
| .uleb128 0x5 # (DIE (0x59) DW_TAG_formal_parameter) |
| .ascii "p\0" # DW_AT_name |
| .byte 0x1 # DW_AT_decl_file (dwarf4.c) |
| .byte 0x3 # DW_AT_decl_line |
| .byte 0xe # DW_AT_decl_column |
| .long 0x9a # DW_AT_type |
| .long .LLST0 # DW_AT_location |
| .long .LVUS0 # DW_AT_GNU_locviews |
| .uleb128 0x6 # (DIE (0x6b) DW_TAG_variable) |
| .long .LASF3 # DW_AT_name: "local" |
| .byte 0x1 # DW_AT_decl_file (dwarf4.c) |
| .byte 0x4 # DW_AT_decl_line |
| .byte 0x7 # DW_AT_decl_column |
| .long 0x9a # DW_AT_type |
| .long .LLST1 # DW_AT_location |
| .long .LVUS1 # DW_AT_GNU_locviews |
| .uleb128 0x7 # (DIE (0x7f) DW_TAG_GNU_call_site) |
| .quad .LVL1 # DW_AT_low_pc |
| .long 0x2d # DW_AT_abstract_origin |
| .uleb128 0x8 # (DIE (0x8c) DW_TAG_GNU_call_site) |
| .quad .LVL2 # DW_AT_low_pc |
| # DW_AT_GNU_tail_call |
| .long 0x2d # DW_AT_abstract_origin |
| .byte 0 # end of children of DIE 0x3b |
| .uleb128 0x9 # (DIE (0x9a) DW_TAG_base_type) |
| .byte 0x4 # DW_AT_byte_size |
| .byte 0x5 # DW_AT_encoding |
| .ascii "int\0" # DW_AT_name |
| .byte 0 # end of children of DIE 0xb |
| .section .debug_abbrev,"",@progbits |
| .Ldebug_abbrev0: |
| .uleb128 0x1 # (abbrev code) |
| .uleb128 0x11 # (TAG: DW_TAG_compile_unit) |
| .byte 0x1 # DW_children_yes |
| .uleb128 0x25 # (DW_AT_producer) |
| .uleb128 0xe # (DW_FORM_strp) |
| .uleb128 0x13 # (DW_AT_language) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x3 # (DW_AT_name) |
| .uleb128 0xe # (DW_FORM_strp) |
| .uleb128 0x1b # (DW_AT_comp_dir) |
| .uleb128 0xe # (DW_FORM_strp) |
| .uleb128 0x11 # (DW_AT_low_pc) |
| .uleb128 0x1 # (DW_FORM_addr) |
| .uleb128 0x12 # (DW_AT_high_pc) |
| .uleb128 0x7 # (DW_FORM_data8) |
| .uleb128 0x10 # (DW_AT_stmt_list) |
| .uleb128 0x17 # (DW_FORM_sec_offset) |
| .byte 0 |
| .byte 0 |
| .uleb128 0x2 # (abbrev code) |
| .uleb128 0x2e # (TAG: DW_TAG_subprogram) |
| .byte 0x1 # DW_children_yes |
| .uleb128 0x3f # (DW_AT_external) |
| .uleb128 0x19 # (DW_FORM_flag_present) |
| .uleb128 0x3 # (DW_AT_name) |
| .uleb128 0x8 # (DW_FORM_string) |
| .uleb128 0x3a # (DW_AT_decl_file) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x3b # (DW_AT_decl_line) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x39 # (DW_AT_decl_column) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x3c # (DW_AT_declaration) |
| .uleb128 0x19 # (DW_FORM_flag_present) |
| .uleb128 0x1 # (DW_AT_sibling) |
| .uleb128 0x13 # (DW_FORM_ref4) |
| .byte 0 |
| .byte 0 |
| .uleb128 0x3 # (abbrev code) |
| .uleb128 0x18 # (TAG: DW_TAG_unspecified_parameters) |
| .byte 0 # DW_children_no |
| .byte 0 |
| .byte 0 |
| .uleb128 0x4 # (abbrev code) |
| .uleb128 0x2e # (TAG: DW_TAG_subprogram) |
| .byte 0x1 # DW_children_yes |
| .uleb128 0x3f # (DW_AT_external) |
| .uleb128 0x19 # (DW_FORM_flag_present) |
| .uleb128 0x3 # (DW_AT_name) |
| .uleb128 0x8 # (DW_FORM_string) |
| .uleb128 0x3a # (DW_AT_decl_file) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x3b # (DW_AT_decl_line) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x39 # (DW_AT_decl_column) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x27 # (DW_AT_prototyped) |
| .uleb128 0x19 # (DW_FORM_flag_present) |
| .uleb128 0x11 # (DW_AT_low_pc) |
| .uleb128 0x1 # (DW_FORM_addr) |
| .uleb128 0x12 # (DW_AT_high_pc) |
| .uleb128 0x7 # (DW_FORM_data8) |
| .uleb128 0x40 # (DW_AT_frame_base) |
| .uleb128 0x18 # (DW_FORM_exprloc) |
| .uleb128 0x2117 # (DW_AT_GNU_all_call_sites) |
| .uleb128 0x19 # (DW_FORM_flag_present) |
| .uleb128 0x1 # (DW_AT_sibling) |
| .uleb128 0x13 # (DW_FORM_ref4) |
| .byte 0 |
| .byte 0 |
| .uleb128 0x5 # (abbrev code) |
| .uleb128 0x5 # (TAG: DW_TAG_formal_parameter) |
| .byte 0 # DW_children_no |
| .uleb128 0x3 # (DW_AT_name) |
| .uleb128 0x8 # (DW_FORM_string) |
| .uleb128 0x3a # (DW_AT_decl_file) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x3b # (DW_AT_decl_line) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x39 # (DW_AT_decl_column) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x49 # (DW_AT_type) |
| .uleb128 0x13 # (DW_FORM_ref4) |
| .uleb128 0x2 # (DW_AT_location) |
| .uleb128 0x17 # (DW_FORM_sec_offset) |
| .uleb128 0x2137 # (DW_AT_GNU_locviews) |
| .uleb128 0x17 # (DW_FORM_sec_offset) |
| .byte 0 |
| .byte 0 |
| .uleb128 0x6 # (abbrev code) |
| .uleb128 0x34 # (TAG: DW_TAG_variable) |
| .byte 0 # DW_children_no |
| .uleb128 0x3 # (DW_AT_name) |
| .uleb128 0xe # (DW_FORM_strp) |
| .uleb128 0x3a # (DW_AT_decl_file) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x3b # (DW_AT_decl_line) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x39 # (DW_AT_decl_column) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x49 # (DW_AT_type) |
| .uleb128 0x13 # (DW_FORM_ref4) |
| .uleb128 0x2 # (DW_AT_location) |
| .uleb128 0x17 # (DW_FORM_sec_offset) |
| .uleb128 0x2137 # (DW_AT_GNU_locviews) |
| .uleb128 0x17 # (DW_FORM_sec_offset) |
| .byte 0 |
| .byte 0 |
| .uleb128 0x7 # (abbrev code) |
| .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site) |
| .byte 0 # DW_children_no |
| .uleb128 0x11 # (DW_AT_low_pc) |
| .uleb128 0x1 # (DW_FORM_addr) |
| .uleb128 0x31 # (DW_AT_abstract_origin) |
| .uleb128 0x13 # (DW_FORM_ref4) |
| .byte 0 |
| .byte 0 |
| .uleb128 0x8 # (abbrev code) |
| .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site) |
| .byte 0 # DW_children_no |
| .uleb128 0x11 # (DW_AT_low_pc) |
| .uleb128 0x1 # (DW_FORM_addr) |
| .uleb128 0x2115 # (DW_AT_GNU_tail_call) |
| .uleb128 0x19 # (DW_FORM_flag_present) |
| .uleb128 0x31 # (DW_AT_abstract_origin) |
| .uleb128 0x13 # (DW_FORM_ref4) |
| .byte 0 |
| .byte 0 |
| .uleb128 0x9 # (abbrev code) |
| .uleb128 0x24 # (TAG: DW_TAG_base_type) |
| .byte 0 # DW_children_no |
| .uleb128 0xb # (DW_AT_byte_size) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x3e # (DW_AT_encoding) |
| .uleb128 0xb # (DW_FORM_data1) |
| .uleb128 0x3 # (DW_AT_name) |
| .uleb128 0x8 # (DW_FORM_string) |
| .byte 0 |
| .byte 0 |
| .byte 0 |
| .section .debug_loc,"",@progbits |
| .Ldebug_loc0: |
| .LVUS0: |
| .uleb128 0 # View list begin (*.LVUS0) |
| .uleb128 .LVU5 # View list end (*.LVUS0) |
| .uleb128 .LVU5 # View list begin (*.LVUS0) |
| .uleb128 0 # View list end (*.LVUS0) |
| .LLST0: |
| .quad .LVL0-.Ltext0 # Location list begin address (*.LLST0) |
| .quad .LVL1-1-.Ltext0 # Location list end address (*.LLST0) |
| .value 0x1 # Location expression size |
| .byte 0x55 # DW_OP_reg5 |
| .quad .LVL1-1-.Ltext0 # Location list begin address (*.LLST0) |
| .quad .LFE0-.Ltext0 # Location list end address (*.LLST0) |
| .value 0x4 # Location expression size |
| .byte 0xf3 # DW_OP_GNU_entry_value |
| .uleb128 0x1 |
| .byte 0x55 # DW_OP_reg5 |
| .byte 0x9f # DW_OP_stack_value |
| .quad 0 # Location list terminator begin (*.LLST0) |
| .quad 0 # Location list terminator end (*.LLST0) |
| .LVUS1: |
| .uleb128 .LVU2 # View list begin (*.LVUS1) |
| .uleb128 .LVU5 # View list end (*.LVUS1) |
| .uleb128 .LVU5 # View list begin (*.LVUS1) |
| .uleb128 .LVU6 # View list end (*.LVUS1) |
| .uleb128 .LVU6 # View list begin (*.LVUS1) |
| .uleb128 0 # View list end (*.LVUS1) |
| .LLST1: |
| .quad .LVL0-.Ltext0 # Location list begin address (*.LLST1) |
| .quad .LVL1-1-.Ltext0 # Location list end address (*.LLST1) |
| .value 0x1 # Location expression size |
| .byte 0x55 # DW_OP_reg5 |
| .quad .LVL1-1-.Ltext0 # Location list begin address (*.LLST1) |
| .quad .LVL1-.Ltext0 # Location list end address (*.LLST1) |
| .value 0x4 # Location expression size |
| .byte 0xf3 # DW_OP_GNU_entry_value |
| .uleb128 0x1 |
| .byte 0x55 # DW_OP_reg5 |
| .byte 0x9f # DW_OP_stack_value |
| .quad .LVL1-.Ltext0 # Location list begin address (*.LLST1) |
| .quad .LFE0-.Ltext0 # Location list end address (*.LLST1) |
| .value 0x3 # Location expression size |
| .byte 0x8 # DW_OP_const1u |
| .byte 0x7b |
| .byte 0x9f # DW_OP_stack_value |
| .quad 0 # Location list terminator begin (*.LLST1) |
| .quad 0 # Location list terminator end (*.LLST1) |
| .section .debug_aranges,"",@progbits |
| .long 0x2c # Length of Address Ranges Info |
| .value 0x2 # DWARF aranges version |
| .long .Ldebug_info0 # Offset of Compilation Unit Info |
| .byte 0x8 # Size of Address |
| .byte 0 # Size of Segment Descriptor |
| .value 0 # Pad to 16 byte boundary |
| .value 0 |
| .quad .Ltext0 # Address |
| .quad .Letext0-.Ltext0 # Length |
| .quad 0 |
| .quad 0 |
| .section .debug_line,"",@progbits |
| .Ldebug_line0: |
| .section .debug_str,"MS",@progbits,1 |
| .LASF0: |
| .string "GNU C17 14.2.1 20240906 [releases/gcc-14 r14-10649-gaedf6f810ee] -mtune=generic -march=x86-64 -g -gdwarf-4 -O2" |
| .LASF1: |
| .string "dwarf4.c" |
| .LASF3: |
| .string "local" |
| .LASF2: |
| .string "." |
| .ident "GCC: (GNU) 14.2.1 20240906 [releases/gcc-14 r14-10649-gaedf6f810ee]" |
| .section .note.GNU-stack,"",@progbits |
